This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A087730 #11 Mar 19 2025 23:20:48 %S A087730 2,1,2,3,1,2,5,6,2,5,1,4,5,11,6,9,10,11,13,14,8,17,11,4,11,16,19,20, %T A087730 22,27,16,22,4,23,24,37,28,14,23,36,11,11,15,53,64,20,75,83,91,35,72, %U A087730 80,48,47,2,12,30,38,54,60,108,173,13,173,164,69,121,36,170,204,285,247,105 %N A087730 Values of j for A087651 and A087732. %e A087730 2307*2557#-1 and 2307*2557#+1 are twin primes. %Y A087730 Cf. A002110, A087651, A086916, A087732. %K A087730 nonn %O A087730 0,1 %A A087730 _Pierre CAMI_, Sep 28 2003 %E A087730 Edited by _Jud McCranie_ and _Ray Chandler_, Oct 05 2003